1)The string in the figure is L = 100.0 cm long, and the distance d to...
1)The string in the figure is L = 100.0 cm long, and the distance d to the fixed peg at point P is 62.5 cm. When the initially stationary ball is released with the string horizontal as shown, it will swing along the dashed arc. What is its speed when it reaches its lowest point
2)What is its speed when it reaches its highest point after the string catches on the peg
3) A constant force of 45.5 N, directed at 27.5° from horizontal, pulls a mass of 13.5 kg horizontally a distance of 3.33 m. Calculate the work done by the force
Homework Answers
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1)The string in the figure is L = 100.0 cm long, and
the distance d to...
1- A 300 ? mass is attached to a solid 40 ?? long string the other...
1- A 300 ? mass is attached to
a solid 40 ?? long string the other end of which is secured to the
ceiling. The mass is given an initial speed which makes it swing
around a circular path in the horizontal plane without changing its
speed and without changing its height. The object completes 2
revolutions in 2 seconds.
A) What is the magnitude of the angular velocity of this
circular motion? B) Find the tension in the string....
4. [ 17 points] A ball is attached to a horizontal cord of length 110 cm,...
4. [ 17 points] A ball is attached to a horizontal cord of length 110 cm, A peg is located a distance h-80cm directly below the point of attachment of the cord. If the ball is released what will be the speed of the ball when it reaches the top of its circular path about the peg? whose other end is fixed (see Fig.). Peg
2. A small box of mass m is kept on a fixed, smooth sphere of radius...
2. A small box of mass m is kept on a fixed, smooth sphere of radius R at a position where the radius through the box makes an angle of 30° with the vertical. The box is released from the position. (a) What is the force exerted by the sphere on the box just after the release? (b) Find the distance travelled by the box before it leaves contact with the sphere. 3. A particle is suspended from a fixed...
In the figure, a long rectangular conducting loop, of width L = 20 cm, resistance R...
In the figure, a long rectangular conducting loop, of width L = 20 cm, resistance R = 11 ohm, and mass m = 0.10 kg, is hung in a horizontal, uniform magnetic field of magnitude 1.3 T that is directed into the page and that exists only above line The loop is then dropped: during its fall, it accelerates until it reaches a certain terminal speed v_ Ignoring air drag, find the terminal speed. Number Units the tolerance is +/-2%
question 4-7 4. Travelling Waves and Their Characteristics A rope wave travels in the positive x -direction. You are also told that the speed of the wave is 1000 cm/s, its frequency is 200 H...
question 4-7
4. Travelling Waves and Their Characteristics A rope wave travels in the positive x -direction. You are also told that the speed of the wave is 1000 cm/s, its frequency is 200 Hz, and that the wave is subject to the following initial conditions: at x 0 and t = 0: y =-1 cm, and, at x = 0 and t : ar = +20 cm/s (this is the velocity of the point on the rope at horizontal...
Two parallel, metal plates with separation distance d = 1.00 cm carry charges of equal magnitude...
Two parallel, metal plates with separation distance d = 1.00 cm carry charges of equal magnitude but opposite sign. The plates are oriented horizontally. Assume the electric field between the plates is uniform, and it has a magnitude of 1,920 N/C. A charged particle with mass 2.00 ✕ 10−16 kg and charge 1.11 ✕ 10−6 C is projected from the center of the bottom negative plate with an initial speed of 1.11 ✕ 105 m/s at an angle of 37.0°...
(non calculus based physics) Question 1 An Olympic weight lifter lifts an 1800 N set of...
(non calculus based physics) Question 1 An Olympic weight lifter lifts an 1800 N set of weights from the ground to a vertical distance of 2.20 m above his head. Assuming he moves the weights at constant speed, how much work does the weight lifter do? Question 2 A 4.5 kg trunk, initially at rest, takes 2.0 s to slide 2.8 m down a rough 25° slope. Calculate: the work performed by the force of gravity. the amount of mechanical...
A plunger can be moved back and forth in a hollow tube that is L = 150 cm long with two open ends. A stretched wire is placed near the open end, as shown in the figure. The l = 50.0 cm long, 5.0 gram...
A plunger can be moved back and forth in a hollow tube that is L
= 150 cm long with two open ends. A stretched wire is placed near
the open end, as shown in the figure. The l = 50.0 cm long, 5.0
gram wire is fixed at both ends and oscillates in its fundamental
mode. By resonance (meaning that the frequency of the string equals
the frequency of the air column in the tube), the string sets the...
F10.5 N 12.0 cm F-10.5 N 31.0 cm Figure 1: The diagram for problem 3 showing a disk's movement with a string wrapp...
F10.5 N 12.0 cm F-10.5 N 31.0 cm Figure 1: The diagram for problem 3 showing a disk's movement with a string wrapped around it. (3) A string is wrapped around a disk of mass 2.60 kg. Starting from rest, you pull the string with a constant force of 10.5 N along a mearly frictionless surface. At the instant when the center of mass of the disk has moved a distance of 0.120 m, your hand has moved a distance...
1- A 300 ? mass is attached to
a solid 40 ?? long string the other end of which is secured to the
ceiling. The mass is given an initial speed which makes it swing
around a circular path in the horizontal plane without changing its
speed and without changing its height. The object completes 2
revolutions in 2 seconds.
A) What is the magnitude of the angular velocity of this
circular motion? B) Find the tension in the string....
4. [ 17 points] A ball is attached to a horizontal cord of length 110 cm, A peg is located a distance h-80cm directly below the point of attachment of the cord. If the ball is released what will be the speed of the ball when it reaches the top of its circular path about the peg? whose other end is fixed (see Fig.). Peg
2. A small box of mass m is kept on a fixed, smooth sphere of radius R at a position where the radius through the box makes an angle of 30° with the vertical. The box is released from the position. (a) What is the force exerted by the sphere on the box just after the release? (b) Find the distance travelled by the box before it leaves contact with the sphere. 3. A particle is suspended from a fixed...
In the figure, a long rectangular conducting loop, of width L = 20 cm, resistance R = 11 ohm, and mass m = 0.10 kg, is hung in a horizontal, uniform magnetic field of magnitude 1.3 T that is directed into the page and that exists only above line The loop is then dropped: during its fall, it accelerates until it reaches a certain terminal speed v_ Ignoring air drag, find the terminal speed. Number Units the tolerance is +/-2%
question 4-7
4. Travelling Waves and Their Characteristics A rope wave travels in the positive x -direction. You are also told that the speed of the wave is 1000 cm/s, its frequency is 200 Hz, and that the wave is subject to the following initial conditions: at x 0 and t = 0: y =-1 cm, and, at x = 0 and t : ar = +20 cm/s (this is the velocity of the point on the rope at horizontal...
A plunger can be moved back and forth in a hollow tube that is L
= 150 cm long with two open ends. A stretched wire is placed near
the open end, as shown in the figure. The l = 50.0 cm long, 5.0
gram wire is fixed at both ends and oscillates in its fundamental
mode. By resonance (meaning that the frequency of the string equals
the frequency of the air column in the tube), the string sets the...
F10.5 N 12.0 cm F-10.5 N 31.0 cm Figure 1: The diagram for problem 3 showing a disk's movement with a string wrapped around it. (3) A string is wrapped around a disk of mass 2.60 kg. Starting from rest, you pull the string with a constant force of 10.5 N along a mearly frictionless surface. At the instant when the center of mass of the disk has moved a distance of 0.120 m, your hand has moved a distance...
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